| Budget Amount *help |
¥6,110,000 (Direct Cost: ¥4,700,000、Indirect Cost: ¥1,410,000)
Fiscal Year 2019: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2018: ¥1,690,000 (Direct Cost: ¥1,300,000、Indirect Cost: ¥390,000)
Fiscal Year 2017: ¥2,730,000 (Direct Cost: ¥2,100,000、Indirect Cost: ¥630,000)
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| Outline of Final Research Achievements |
High-resolution audio is a generic term for systems that can render beyond standard quality audio such as CD or DVD. This study dealt with how high-resolution audio affects the listener's experience. A series of experiments using the electroencephalogram (EEG) and evoked brain potentials revealed the following three findings. First, listening to audio materials that contained inaudible high-frequency components induced a larger oscillatory power on the EEG than listening to similar materials from which the high-frequency components were removed by digital filtering. Second, filtering out high-frequency components caused a temporal smearing of the sound (i.e., blurring instantaneous sound onsets), but the difference was not registered in the auditory cortex when the sampling rate was not changed. Third, when the sound was converted into a lower sampling rate, the resulting temporal distortion may have affected auditory neural processing from the inner ear level.
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